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Entity Relationship Modelling

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Description

An introduction to 1 of the key diagrams used during systems analysis. The material includes a brief background and descriptions of the key elements of the modelling technique.

Table of Contents

1. Introduction
2. Why ERDs are so Useful
3. Why ERDs might be harmful
4. Entities
5. Attributes
6. Relationships
7. Degree of a Relationship/Cardinality
8. Symbols

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